Die-separating means



sept. 29, 1925. 1,555,735 R. L. WILCOX DIE SEFARATING MEANS Filed April 25. 1924 2 sheets-sheet 1 '/Ali R. L. WILCOX DIE SEPARATING MEANS Filed April 25.- 1924 2 Sheets-Sheet 2 f2 fff Patented Sept. 29, 1925.

UNITED sTATEs 1,555,735 PATENT OFFICE.l

RICHARD LESTER WILCOX, F WATERBURY, CONNECTICUT, A'SSIGNOR TO TI-IE WATERBURY FARREL FOUNDRY AND MACHINE COMPANY, OF WATERBURY, CON- NECTICUT, A CORPORATION OF CONNECTICUT.

DIE-SEPARATING MEANS.

Appiication mea Aprii 25, i924. serial-Nro. 708,891.

To all whom t may concern:

Be it known that I, RICHARD LESTER WIL- ooX, a citizen of the United States, residing at lVaterbury, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Die- Separating Means, of which the following is a specification, reference being had therein to the accompanying drawings.

My inventiony relates to die separating means, its principal object being to provide simple `mechanism for separating the dies of an open die header or upsetting machine.

Among other aims and objects of my invention may be recited the provision of a device of the character mentioned witha view to compactness and in which the number of .parts are few, the construction simple, the cost of production small, and etticiency and operation high.

The improvements in the details and arrangement of parts will be apparent from an inspection of the accompanying drawings, in connection with the description 25 hereinafter contained, and wherein an embodimentof the invention is disclosed for the purpose of imparting a full understanding of the same. l

Having more particular reference to the drawings and in connection with which like reference characters referto corresponding parts in the several figures;

Figure 1 is a front elevation of a pair of dies for a heading machine orthe like and the adjacent supporting mechanism therefor with my improved separating means connected therewith;y

Figure 2 is a side elevation thereof partly in section;

Figure 3 is a modified form of a detail of -my improved mechanism; i

Figure 4 is a fragmentary front elevation, partly in section, of my improved mechanism asapplied to the under side of the dies; and the parts thereof in section being taken generally upon line 4 4 of Figure 5;

Figure is a side elevation of Figure 4.

It has heretofore been the practice to separate the dies of an open die header. or upsetting machine at the wire feed line by parting pins, separating pins or thelike, an illustration of such means being shown in Letters Patent No. 1,104,090, dated July 21,

1914,'particularly in Figure 4 thereof, and also in Letters Patent No. 1,108,958, dated September 1, 1914, a heavy flat spring, not shown in either of the above-patents, bearing upon the upper end of each of the parting pins or separating pins, which move in `a path at substantially a right angle to the movement of the dies. f W'ith such mechanism the die cap or other part or parts that support the pins must be machined with great care and exactness and each must be in correct alignment with each other and the groove formed by the angular corner faces of the dies, when the dies are in proximity to the wire feed line. Ifthe pins are not so arranged, the lower pointed end thereof will not register with said groove, thus having a. tendency to cramp the dies and apply an unequal pressure thereto at diiferent points throughout their length. If this occurs, the dies may be separated more at one end than at the other, and if perchance the minimum separation is at the inner end of the dies a defective' feed of the wire results and the end of the wire may abut against the dies and stop the feed.

As the pins are of substantial length the element in which they are mounted must of necessity he of substantialI height to provide proper support therefor and this height, as well as the pin operating springs, requires space that can otherwise be advantageously utilized. v

All of the above and other vobjections of the heretofore conventional method for separating the dies are obviated in my improved device, which occupies the minimum amount of not otherwise required space, the

necessity of fine machining of the parts is U entirely eliminated, and in these, and many Figures 1 and 3,. wherein the dies are near the wire feed line. A piece of wire designated 13 is shown in section at this wire feed line. l

-V-sliaped groove substantially as shown in The bed plate upon which the dies are supported is designated 111, and the cap or cover over the top thereof 15.

All of the mechanism above described is of a well known form and operates in an equally well known manner and therefore needs no further description herein.

rlhe means for actuating the dies is not shown herein for the above reason, but the same travel between the said wire feed line and the upsetting line, which latter line is designated min Figure 1. From the wire feed line to the upsetting line the dies are positively actuated by relatively powerful mechanism to cut off a piece of the wire rod but ai'e usually returned from the upsetting line by spring. mechanism.

As shown, the diesare held against end'- wise movement in the supporting means by the plates 16 and 17, this being only one of the many ways by which the same result may be accomplished. f

lVithin the cover 15 are one or more grooves 2() in each of which is a lever 19 that is hinged at one end upon a stud 18.

Movable within the cover 15 are plungers 21, corresponding in number with the levers 19, and each of which is surrounded by a coil spring 22 within the bore 23. These plungers are limited in their downward movement by the nuts 24 threaded on the shank thereof, thus providing means to vary the relative position of the plungers and the tension of the springs 22.

Resting within the V `groove formed by two of the angular faces at the corners of the dies is a roll 25 or block 26 triangular in cross section, two of the angular faces of which are in Contact with the angular corner faces of the dies 10 and 11 and the other face with the underside of the lever 19. As the dies travel from the wire feed line to the upsetting line, the roll 25 or the block 26 travel with the dies and as the adjacent faces of the dies are brought into contact with each other are moved slightly upward, the lever 19 swinging upon its pivot mounting to permit this action. During the return movement, that is, as the dies approach the wire feed line, the spring 22, through the lever 19 moves the roll 25 or the block 26 downwardly into the V grooves formed between the dies, which action separates the dies sufficiently to permit the wire rod to pass therebetween.

In Figures 1, 2 and 3, I have shown my improved mechanism as applied to the top of the dies, but it will operate equally as well if applied to the under side thereof, or if desired, to both the top and bottom.

In Figures i and 5, the invention is illusytrated as applied to the under side of the die. in which case, the stud 18 is preferably connected with the bed plate 14a or other part below the dies, and the lever 19 is moved in one direction by a spring 27, which exerts its tension against the hollow plug 28. The die cap or cover 15a is, of course, modified slightly in this embodiment of my invention. In all other respects, however, the mechanism is constructed and operated in the same manner as if applied to the top of the dies. If desired the mechanism may be applied to both the top and bottom of the die in which case the structures as shown in Figures 1, 2, 4 and 5 are utilized.

There are minor changes and alterations that may be made within my invention, aside from those herein suggested, and I would therefore have it understood that I do not limit myself to the exact construction herein shown and described, but claim all that 4.

falls fairly within the spirit and scope of the appended claims. v

Having described my invention, what I claim as new and desire to secure by Letters Patent is 1. In combination with the dies of a headi ing machine or'the like, having faces thereon which co-operate to form a groove when the dies are adjacent toeach other; of

means for holding the same; and means for separa-ting the dies at a predetermined station, comprising a lever, yielding means for the lever, and a member in the groove independent of the lever having a movable contact therewith and moved in one direction 1 thereby.

2. In combination with the dies of a heading machine or the like, having faces thereon which co-operate to form a groove when the dies are adjacent to each other; of means L* r for holding thesame; and means, for separating the dies at apredetermined station, comprising a lever, yielding means for the lever, and a member in the groove independent of the lever having a movable contact therewith and moved in one direction thereby, the mounting of the lever being upon one side of the wire feed line.

In combination with the dies of a heading machine or the like, having faces thereon which co-operate to form a groove when the dies are adjacent to each other; of means for holding the same; and means for separating the dies at a predetermined station, comprising a lever, yielding meansfor i the lever, and a member in the groove independent of the lever having a movable contact therewith and moved in one direction thereby, the yielding means being upon one side of the wire feed line. V

4.-. In combination with the dies of a heading machine or the like, having faces thereon which co-operate to form a'groove when the dies are adjacent to each other; of

means for holding the same and means for separating the dies at a predetermined station comprising a lever, yielding means for the lever; and a member in the groove independent of the lever having a movablev contact therewith and moved in one direction thereby, the mounting of the lever being upon one side of the wire feed line and the yielding means being upon the other side thereof.

5. In combination with the dies of a heading machine, or the like, having faces thereon which (5o-operate to form a groove when the dies are adjacent to each other; of means for holding the same, comprising a supporting member and a cap or cover' and means, for separating the dies at a predetermined station, comprising a lever, yielding means for the lever, and a member in the groove independent o-f the lever having a movable Contact therewith and moved in one direction thereby, the lever being mounted in the underside of the cap or cover, the mounting of the lever being upon one side of the wire feed line and the yielding means being upon the other side thereof.

In testimony whereof, I have hereunto affixed my signature.

RICHARD LESTER WILCOX. l 

